Editorial Minor

Some miscellaneous typos:
 

Line 356: "that to shallow" should probably read "that are too shallow". 
Line 668, "report and power" should probably read "report any power".
Line 712: "match buy and" should probably read "match buyer and".
Line 912: "seller increase" should probably read "seller to increase"
Line 914-15: "the sender" should probably read something like "the identities of the sender".
Line 916: "able detect" should probably read "able to detect".