Call me old grumpy but if I had any bitcoins (!) I'd very much be loyal to bitcoins and only bitcoins.
No other digital currency is ever going to be really popular or useful until bitcoin succeeds (ie becomes readily recognized and accepted). All the other little copy-cat currencies are just confusing and diluting the bitcoin brand.
Heck, one of the rather silly objections to bitcoin is exactly the fact that "anyone can produce their own version", bitcoin 2.0, 3.0, diginuggets or whatever. Really that shouldn't make any difference. The existence of yen doesn't devalue the dollar for example. However right now we're trying to establish the concept and the brand, so it doesn't help to have people waving other currencies around.
I'm all for free competition, so I'm not saying 'don't offer them for sale'. I'm also for free speech, so am using it to advise others to "Not buy anything except bitocin".
Sorry about that.
A.