We hear this a lot in the US too. I think it's business-speak leaking into general speech. As with most corporate jargon, there is almost always a better phrase available.

What are you people babbling about? I thought this was a website about English, which is an actual living language, not an imaginary one.

Have your ears checked. There is nothing wrong in ending a sentence with a preposition.

The word "beside" is a preposition, therefore it has no plural.

To my ear, the sentence "What can I do but complain?" sounds best. It is concise. It avoids the plural preposition and the unneeded gerund.

Brus,

I disagree. A semicolon, when used to join two phrases, each of which could be a sentence, replaces the conjunction. When a conjunction is used a comma is employed.

You need know only this: a conjunction is not needed after a semicolon because a semicolon relpaces a conjunction.

I stand by my comment. Punctuation, at its best, does not lead us through the maze of badly constructed sentences. It thrusts us through the good ones.

I hope you kept the receipt for this book, as it is rubbish. A semicolon is never used with a conjunction. In specific instances it replaces the conjunction. Others, I am sure, will explain.

What are you talking about? And to whom?

I have always advocated against the hyphen in this case. I believe Winston Churchill would have too.