I use it exclusively and have had no issues. I will, on occasion, accept a check or money order but it obviously needs to clear first.
As others have said, its best to link it to non-household/family bank account 'just in case'.
Your life will be so much easier if you use Paypal. Everything you need is right there and you can even print postage through paypal at a discount. The fees are more than reasonable considering all that they offer.
Jim