Posting etiquette for appraisals?

Is there a posting etiquette for the number of appraisals you post?
I only ask because I post frequently in the appraisals / pre-purchase forums, and I don't want to come across as rude or spammy.

I hope I'm not annoying anyone with all the postings. I'm just passionate about the domaining business and want to acquire as much knowledge as possible. I feel like the entire appraisal forums will just be me soon.

your obsessive domainer,
-M