You could post on every thread with a simple LOL or

or HI or whatever to build your title up, but it does not mean anything IMHO. Just because a title says newbie your oppinions or thoughts from my perspective would never be dismissed.
Its all in the manner of your communication, where I make my judgement, and frankly, sometimes the newbies will have some better advise than some of the old dogs around.......and vice versa too in other instances.
If you hang around (and I hope that you do) in time you will start building your post numbers up and your title will change.
Ive been on this forum for some time, yet still dont have a high a number of posts in comparison to others who have been here for a much shorter time than I, I will usually put it down to the fact that I can be a bit of a lurcher, read everything and pretty much every post, but it doesnt alway mean im going to reply. I only do so when I feel I have something diffrent to add, or if I really am in support/ disagreement with the subject at hand and feel that my oppinion on the matter needs to be spoken.
In actual fact I have more respect for those that say only what needs to be said, and think about what they are writing, I feel that sometimes, constant and mass "yeah im with him/her" posts can make me consider that poster lacking in ones own opinion or thoughts on any matter or have an inability to add a perspective from their own feelings/ thoughts and ideas.