If your terms are not clear or easily misunderstood, rewrite them at the next possible interval.

It's not like electricity where the temperature and the season will cause it to rise and fall at different intervals.

Tell everyone not to use water for a 5 minute interval and make sure the meter is not still spinning.

I want to cash out, and repeat at an interval that leverages my upgraded buying powers at all times.

Key is to run the campaign  multiple times at regular intervals

I have also relocated from Texas to Georgia during the interval.

Phone Pre  Screen...my handy guys do showing in 2 hr intervals on Sunday..2.  

Also the new lease will be a periodic lease of 2 month intervals. 

One other thing in an older BP version, is that once a post reached a certain number of votes, the border around that post changed a bit to highlight that post and draw the reader's attention, and it changed again at another vote threshshold (something I admit I liked, to make sure I didn't miss something outstanding in some thread).Keep in mind that the BP site limits your number of vote bullets in a given time interval, so you may want to be selective in voting lest you run out of votes just before I post something great :)

I think that most contractors should be able to cover the cost of materials and then get paid for work completed at scheduled intervals.