I know that this issue has probably been covered in the past but would be grateful all the same if someone had a quick answer to my question.
I have a main domain (well ranked and PR6), I have recently registered another 2 domains which I may use in the future and am currently only using for e-mail. I have temporarily set up the nameservers of these two domains to point to my primary one. I would hate to incur a penalty for this so am seeking reassurance that this is not going to create a problem.
If it is even remotely possible that Google could misread my motives I would rather simply park these domains for future use.