I wrote a blog post that gave a basic rundown here: http://www.trulia.com/blog/brian_kurtz/2013/11/how_to_get_more_thumbs_up_votes_by_paying_it_forward
You can also take a more advanced approach:
1) Look for Questions with Lots of Response
2) Create a HIGH QUALITY Video Of Your Response - emphasis on high quality audio, audio, audio. NEVER use the built-in microphone on any camera or you'll shoot yourself in the foot before you even get out of the gate. Bad audio has been proven many times over to be the #1 reason why people can't stand to watch a web video all the way through.
3) Put the Video On YouTube
4) Create a Blog Post - make it on your Truila Blog, write a summary of what's in the video in the blog post and embed the video into the blog post. It can be done.
5) Go Back and Answer the Question - put a link to the VIDEO BLOG POST you just created on your Trulia blog at the beginning with another text summary of your video answer (don't copy and paste from blog post). Should look like this:
"Hey Kelly, I posted a video that tells you exactly how you can XYZ here's the link: http:TruliaBlogURL
What I basically said was:
Line #1 - some text
Line #2 - some text
Line #3 - some text
Hope that helps - Carli"
Step #6 - Give thumbs up to everyone else's answer just like in the basic version
Notice what is happening here:
A) You get some extra points for creating the Trulia blog post.
B) Anyone who reads your answer will want to click through to the video.
C) Your Answer "Scales Strong" - the physical scale of your answer really does matter. Even if your video ROCKED, a 2-line response comes across as a weak answer that doesn't deserve a thumbs up. So don't just drop in the link to the video and go. The extra lines of summary text mean your answer doesn't look "small and weak".
D) The viewer clicks through to your TRULIA BLOG in order to watch the video. Bonus points for blog post views.
E) Power of Video - if your video response is great, you're much more likely to get a thumbs up.
F) Returning Answers - just like in the basic version all of those YOU give a thumbs up to will return and it's highly likely that THEY will want to see your video too! Those people end up at your blog (bonus points) and even THEY are more likely to give you a thumbs up.
G) Best Answer - creating a video response like this is the best way to get more "Best Answers" than anyone else and other that uploading sold data...a best answer is the highest point-value thing here on Trulia that you can actually get on a repeat basis.... more