Absolutely.

Bitcointalk PMs are not destined to become like mailboxes filled with crappy advertising flyers.
Do you know how much PM some of us already receive per day? Can you imagine how many it would be if every project advertised (aka invited) in this way?

Neutral tags are fine, you should not worry too much about that. You should just continue to be active in your [ANN] if you want to actively promote your project