There is no rule against being a collector or shelf queen, although it is frowned upon by many.
All your recent posts are in the marketplace, if you keep it up you are asking to get your access stripped. I suggest cooling it on the marketplace and looking/posting in other areas of the site for a while. I am not trying to be a dick here, but there have been a LOT of accounts squashed in the past year or so.
Any of the following below can possibly get you marketplace restricted (this is a cut and paste from
Here)
1. "long time member" but has years of public inactivity
2. Contributes nothing to the site socially
3. No ties to here, hence no reputation to worry about
4. Has made questionable decision on hardware and sales
5. Only lurks in the market
6. First to post in giveaway, free stuff threads or raffles
7. Buys/sells things frequently, mostly at profit (flipper)
8. Active for a short time, then only posts in the market
9. Insulting or dismissive of the forum regulars when questioned about rules, prices or expectations of sellers
10. Demands +4% or Paypal gift on transactions with little reputation to stand on
11. Buys at "community prices", sells at "ebay prices"
12. Runs multiple accounts to hide market activity