now wait, you have 6 servers with core on them and you don't mind?
what are you doing chasing transactions?
makes zero sense to claim to have servers loaded with core and do no mining
what you gonna use a full blown core for
go bang your merchant biz through coinbase and swipe to electrum or something you don't need a full core on a server to do merchant trans for yourself
I don't know why I'm still replying to this but Electrum doesn't have a good API (does it have one?) it can't keep track of each users balance like bitcoin-core can and Electrum servers can do bad things like pretend transactions didn't happen, while bitcoin-core is completely trustless. And I also connect direct to the pools and relay transactions direct to them so that I am sure my customers payments will confirm in case they didn't broadcast correctly (happens a lot to people with crap internet).
On top of that the Electrum code isn't as well studied as bitcoin-core and could have really bad bugs, I ain't taking that risk, look what happened to mt gox! (well, what they say happened).
Use coinbase? LOL Why would I pay them commision? why should I trust them when I don't need to? They will probably pull a massive scam someday say they were hacked like every other service that "holds" your bitcoins for you.
I also use some of the nodes for cool experiments, like trying to de-anonymize scammers (psst).