In no particular order of importance...
1) Sharing ideas (not complaining). There's a difference between saying "I think LetsBeef should implement X, Y, and Z" as opposed to saying "Wtf is wrong with LB and why are their admins too stupid to implement X, Y, and Z?" One would get you actually listened to, the other will get you looked at as a troll. If I were a regular member, I would share my ideas in BOTH the forums and to the admins directly. Even if it's an idea the admins already had themselves, you telling them you'd like to see it only encourages them further to get it done.
2) Promoting the site to outsiders on social media, etc. LB needs new members, and again, rather than complaining and bitching that "the site is dead" or "its so empty in here", we could be proactive and actively seek out new members on facebook, google plus and other social media. That's part of the reason we've added the "like" button to every O.P. to make it much easier.
3) Donate when you can. That doesn't necessarily mean buying Exclusive or donating to the site directly, which is one way you could do it. You could offer incentives to other members of the community like @
X-Calibur and @
Student recently did by offering a money prize for the GC. It doesn't even have to be money. If you have some type of special skill, you can offer it like how some members who do GFX have done in the past saying "whoever wins this contest gets a signature or album cover designed by me." Substitute sig/album cover with whatever your special skill is. I remember @
Ill Phenom once gave his old recording equipment (mic, mixer,etc) as a prize in a tourney cause he was buying a new one or some shit. People don't forget shit like that, and even though we cuss each other out in the forums everyday, we're all part of this online community and some of us spend more time on LB than we do with our real life friends so it should be nothing to give back.
4) Vote regularly. Even if you don't have any ideas or money/skill to donate, one thing you can always do to help out other emcees on here is try to vote as frequently and diligently as you can. You'd be helping people to elevate when yo do. Battling is what initially brought all of us here and voting is a huge part of that. There's almost nothing more helpful for a regular member to do than to be a good and active voter.