In the age of digital business networking, it’s obvious that no site has done a better job of it than LinkedIn. While it has expanded its features to integrate Twitter, utilize apps and, most recently, the ability to follow companies, the Groups feature has been a long-standing hallmark.

Within LinkedIn Groups, there have also been changes over the years that included member-generated content, including discussions, job postings and news articles. However, one thing that has not changed is how many groups a user can join. At the moment, the limit is 50.

Though 50 groups seems like a big number, long-time users have found no problem reaching that upper limit in a very short period of time. Meanwhile, new LinkedIn groups pop up at a relatively fast pace.

Because of this, the question then lies in which groups are the most useful to you?

To figure out which LinkedIn groups are right for you, consider the following elements:

1. Industry or Field – Search groups based on the industry or field you’re in or about to enter.
2. Location – Professional organizations in your region tend to have groups, along with regional groups created by individuals.
3. Company – There are many groups associated with companies or former company employees.
4. School – LinkedIn groups are constantly launched for schools either by the institutions themselves or by fellow alumni.
5. Hobbies or interests – You never know if a particular hobby or interest could turn into a business opportunity for you.

After joining the groups you want, observe the discussions, job postings and news articles for the next couple of weeks. If you find that these groups have a great deal of useful activity, you will certainly want to remain an active member.

During your trial period, you should also make note of any users who are attempting to use the group as a mailing list for their own purposes rather than the groups. If this is the case, you will probably want to either think about limiting the group e-mails you receive or, in the extreme case, leave the group altogether.

Always remember, of course, the you can get a great deal out of LinkedIn Groups, so long as you are able to utilize this feature properly.

In its earlier incarnations, LinkedIn, far and away the leader in business networking sites, took the slow road in developing its internal content. Most user-to-user interaction was relegated to either connection invitations or their Answers section. Job postings were still a work in progress, either as a paid direct posting or through job search engine SimplyHired. At the time, LinkedIn Groups was a non-searchable entity, with very little interaction between group members.

Over the past couple, of years, however, the dynamic of LinkedIn Groups has changed dramatically, to the extent that it, if it hasn’t already, will overtake the traditional job board as a primary source for employment.

In its explosive evolution LinkedIn Groups has expanded to allow its members a great deal of interaction. This has included, among other things, the inclusion of a news section, in which group members may add their own content (A TOG Solutions favorite feature), the ability to e-mail fellow group members, regardless of connection, and subgroups for more specific interaction.

Most of all, LinkedIn has added to Groups a Jobs section, which both gives employers a chance to post their jobs for free, as well as allows job seekers an opportunity to announce their own needs.

For employers, this is an excellent tool for sourcing, as it provides both a free platform to advertise jobs in a relatively spam-free environment, which an open system such as Craigslist may not be able to provide.

Job seekers benefit even more. With LinkedIn Groups, the jobs section is a viable source for legitimate positions, the news section contains information that is relevant to them. Most of all, group members themselves are excellent job seeker resources, with the potential to provide a great deal of knowledge.

While it’s true that in a tough economic environment, there’s no true fail-safe job-search tool. But all things being equal, LinkedIn Groups has emerged as one of the most comprehensible and reliable hubs job seekers can turn to.

Depending on what media report you read, it appears that small businesses, while understanding the importance of having an online presence, are reluctant to go much beyond the traditional Web site. Social media, it would seem, is not a part of the plan.

The most significant indication of this is a Citibank survey of small businesses, three-quarters of which believe that social media, in any form, is not helpful in their overall business plan. And, more recently, less than 10 percent of small businesses are currently using Twitter as a mean to engage consumers.

Why do small businesses feel this way? One reason is most likely the current economic client. The mindset, it looks to be, is that social media, for all the bells and whistles, is nothing compared to traditional business development.

Though there may be situations in which that might be true, the opportunity to interact through social media does have a place in the plans of smaller enterprises. The most significant benefit would be engaging the consumer. Plenty of larger entities have taken advantage of gathering feedback from their customers through sites like Twitter and Facebook. The application can certainly translate to a smaller scale.

And in an age where information is essential, social media can be that vital avenue. Gathering information, the cornerstone of any business development, can be facilitated by a networking site such as LinkedIn, where businesses can find the names of potential contacts.

These are just a couple of ways in which social media can help small businesses. The key, though, is for enterprises to create a true plan of action. As we’ve stated in recent posts, it’s just as important to have an understanding of social media before using them.

Developing a social media strategy can take time, a commodity that many small businesses can’t take for granted. That’s OK. Like other marketing tools, social media should be viewed in the long term, as opposed to a quick fix. That the time to determine what’s right for your business and ease into implementation. And in the end, it may be the best thing you ever did.