I am very specific in my requirements, frequency of mowing, fertilizing, seeding, watering, etc... and I periodically inspect, either in person or have a trusted agent do it. 

(c) while some groups may have access to "more sophisticated investors", the frequency at which those same investors can invest may not adequately supply the equity needs of the sponsor company's deal flow; meaning they need more investors (larger pool) to keep doing what they do best which is close on good opportunities. 

He's slowed down with the frequency of his posts in the last year or so, but you should be able to get a ton of good information working your way through the early posts.

This results in making the equivalent of 13 monthly mortgage payments a year, but, more importantly, the increased payment frequency will reduce the overall amount of interest paid on the mortgage.

I didn’t mention that the landlord is trying to make them pay for the repair because they didn’t change to air filter every 2-3 months even though the lease doesn’t have specific requirements for frequency but just “as needed.”

The best advice is to consider each potential applicant on an individual basis, and consider the nature of the offense, the time that has elapsed, and frequency of violation(s).

But researching other Hosts pages, the number of reviews, frequency of reviews, and price can give provide a starting point.

Look up the "frequency illusion"! 

Other than changing filters, what other regular maintenance should be done with ac unit and at what frequency? 

You can keep sinking time and money into a dinosaur that will continue to crap out with increasing frequency, or bite the bullet and replace it.