you setup a batch loop and MPH switches you automatically but you have to be pointed at 12XXX ports.  17XXX for switching within the same algo pool.  You want to switch right after a block is found.  you get paid and you wait for confirm blocks to complete.  Then they are your coins.  Watch for payout mins and transmission fee.   If you send the coins to the exchange for payout it can take 2 to 12 hours normally to return back to your coin of choice.  Some slow trading coins could take several days and you have to watch the exchange, for example maxcoin only pays out best to bitcoin but can takes many days to convert.
Bitcoin is the only coin that is a one way street.  If it goes into bitcoin, it can't get back to the exchange to another coin.  Bitcoin has a high minimum.  see amounts.

Site down is probably overload from all the nicehash people discovering this better site.

Windows 1709 update that came out today breaks Claymore 10. It says the opencl.dll is now missing and will not start.

Update: Reinstalling the video card driver corrected the problem. Turns out the Windows 1709 Update dumps the video driver.

I'm having a strange issue. I've read the last several pages as well as searched via Google for several hours. No dice. Here's the issue:
I have 2 different GTX 970 rigs with 5 cards each. Testing them on ETH only mode. Before overclocking or anything, they all get about 18 Mh/s each. Here's the odd thing: 1 out of the 5 cards will be at around 11 MH/s.... i.e. GPU1. All speeds look equal in Afterburner. I'll restart the computer, and GPU1 will now be at 18 MH/s. But GPU2 will be down to 11. I'll restart the computer again. GPU0 will now be down to 11, all others at 18. So, it's not an issue with a card, because the dropped one changes on each restart. I have the same problem on both rigs. 1 card of 5 is always at 11-12 while the other 4 are at 18. One is an MSI board, the other is a brand new Biostar board. All have powered risers. I'll unplug one GPU, and just try with 4 GPU's. 1 card will be at 11-12, and other 3 at 18 MH/s. Restart, the slow card will be back at 18 but another card will be down to 11-12. It's driving me nuts! I downloaded the miner from Mega. One computer is running 9.7, the other 9.8. Same problem. So, it's not any particular GPU, not the miner version, not the motherboard, not the number of GPU's attached. What the heck is the problem? Somebody hacked into the miner?

You were hacked, as many other users I think. This morning on ethpool i saw few very suspicious miners One of them was at 561 GH/s in one moment, mining block every 30 minutes. Other was on 300 GH/s ...  few are still active I think, you can check this two :
http://ethpool.org/miners/faf37383b55051e2e4c6835d58c7048637838420
http://ethpool.org/miners/97606dc346e7a23ebab1ddbcf6b50ee7b9bdd0cf